| Energy | |||||||
|---|---|---|---|---|---|---|---|
| system | unit | code (alternative) |
symbol or abbrev. |
notes | sample default conversion |
combinations | |
| SI | yottajoule | YJ | YJ | 1.0 YJ (2.8×10 kWh) | |||
| zettajoule | ZJ | ZJ | 1.0 ZJ (2.8×10 kWh) | ||||
| exajoule | EJ | EJ | 1.0 EJ (2.8×10 kWh) | ||||
| petajoule | PJ | PJ | 1.0 PJ (280,000,000 kWh) | ||||
| terajoule | TJ | TJ | 1.0 TJ (280,000 kWh) | ||||
| gigajoule | GJ | GJ | 1.0 GJ (280 kWh) | ||||
| megajoule | MJ | MJ | 1.0 MJ (0.28 kWh) | ||||
| kilojoule | kJ | kJ | 1.0 kJ (240 cal) | ||||
| hectojoule | hJ | hJ | 1.0 hJ (24 cal) | ||||
| decajoule | daJ | daJ | 1.0 daJ (2.4 cal) | ||||
| joule | J | J | 1.0 J (0.24 cal) | ||||
| decijoule | dJ | dJ | 1.0 dJ (0.024 cal) | ||||
| centijoule | cJ | cJ | 1.0 cJ (0.0024 cal) | ||||
| millijoule | mJ | mJ | 1.0 mJ (0.00024 cal) | ||||
| microjoule | μJ (uJ) | μJ | 1.0 μJ (2.4×10 cal) | ||||
| nanojoule | nJ | nJ | 1.0 nJ (2.4×10 cal) | ||||
| picojoule | pJ | pJ | 1.0 pJ (6.2 MeV) | ||||
| femtojoule | fJ | fJ | 1.0 fJ (6.2 keV) | ||||
| attojoule | aJ | aJ | 1.0 aJ (6.2 eV) | ||||
| zeptojoule | zJ | zJ | 1.0 zJ (6.2 meV) | ||||
| yoctojoule | yJ | yJ | 1.0 yJ (6.2 μeV) | ||||
| cgs | megaerg | Merg | Merg | 1.0 Merg (0.10 J) | |||
| kiloerg | kerg | kerg | 1.0 kerg (0.10 mJ) | ||||
| erg | erg | (none) | 1.0 erg (0.10 μJ) | ||||
| millierg | merg | merg | 1.0 merg (0.00010 μJ) | ||||
| microerg | μerg | μerg | 1.0 μerg (0.00010 nJ) | ||||
| microerg | uerg | μerg | 1.0 μerg (0.00010 nJ) | ||||
| Watt-hour multiples | terawatt-hour | TWh | TWh | 1.0 TWh (3.6 PJ) | |||
| TW.h (TW·h, TW-h) |
TW⋅h | ||||||
| gigawatt-hour | GWh | GWh | 1.0 GWh (3.6 TJ) | ||||
| GW.h (GW·h, GW-h) |
GW⋅h | ||||||
| megawatt-hour | MWh | MWh | 1.0 MWh (3.6 GJ) | ||||
| MW.h (MW·h, MW-h) |
MW⋅h | ||||||
| kilowatt-hour | kWh | kWh | 1.0 kWh (3.6 MJ) | ||||
| kW.h (kW·h, kW-h) |
kW⋅h | ||||||
| watt-hour | Wh | Wh | 1.0 Wh (3.6 kJ) | ||||
| W.h (W·h, W-h) |
W⋅h | ||||||
| milliwatt-hour | mWh | mWh | 1.0 mWh (3.6 J) | ||||
| mW.h (mW·h, mW-h) |
mW⋅h | ||||||
| microwatt-hour | μWh (uWh) | μWh | 1.0 μWh (3.6 mJ) | ||||
| μW.h (uW·h, μW.h, "uW."h, μW-h, uW-h) |
μW⋅h | ||||||
| Electronvolt multiples | petaelectronvolt | PeV | PeV | 1.0 PeV (0.16 mJ) | |||
| teraelectronvolt | TeV | TeV | 1.0 TeV (0.16 μJ) | ||||
| gigaelectronvolt | GeV | GeV | 1.0 GeV (0.16 nJ) | ||||
| megaelectronvolt | MeV | MeV | 1.0 MeV (0.16 pJ) | ||||
| kiloelectronvolt | keV | keV | 1.0 keV (0.16 fJ) | ||||
| electronvolt | eV | eV | 1.0 eV (0.16 aJ) | ||||
| millielectronvolt | meV | meV | 1.0 meV (0.16 zJ) | ||||
| microelectronvolt | μeV (ueV) | μeV | 1.0 μeV (0.16 yJ) | ||||
| nanoelectronvolt | neV | neV | 1.0 neV (0.00016 yJ) | ||||
| picoelectronvolt | peV | peV | 1.0 peV (1.6×10 yJ) | ||||
| femtoelectronvolt | feV | feV | 1.0 feV (1.6×10 yJ) | ||||
| Calorie multiples | calorie | Cal (Calorie) | Cal | 1.0 Cal (4.2 kJ) | |||
| megacalorie | Mcal | Mcal | 1.0 Mcal (4.2 MJ) | ||||
| kilocalorie | kcal | kcal | 1.0 kcal (4.2 kJ) | ||||
| calorie | cal | cal | 1.0 cal (4.2 J) | ||||
| millicalorie | mcal | mcal | 1.0 mcal (4.2 mJ) | ||||
| Calorie (thermochemical) | Cal-th (kg-cal-th) | Calth | 1.0 Calth (4.2 kJ) | ||||
| megacalorie (thermochemical) | Mcal-th (g-cal-th) | Mcalth | 1.0 Mcalth (4.2 MJ) | ||||
| kilocalorie (thermochemical) | kcal-th (g-cal-th) | kcalth | 1.0 kcalth (4.2 kJ) | ||||
| calorie (thermochemical) | cal-th (g-cal-th) | calth | 1.0 calth (4.2 J) | ||||
| millicalorie (thermochemical) | mcal-th (g-cal-th) | mcalth | 1.0 mcalth (4.2 mJ) | ||||
| Calorie (15°C) | Cal-15 (kg-cal-15) | Cal15 | 1.0 Cal15 (4.2 kJ) | ||||
| megacalorie (15°C) | Mcal-15 (g-cal-15) | Mcal15 | 1.0 Mcal15 (4.2 MJ) | ||||
| kilocalorie (15°C) | kcal-15 (g-cal-15) | kcal15 | 1.0 kcal15 (4.2 kJ) | ||||
| calorie (15°C) | cal-15 (g-cal-15) | cal15 | 1.0 cal15 (4.2 J) | ||||
| millicalorie (15°C) | mcal-15 (g-cal-15) | mcal15 | 1.0 mcal15 (4.2 mJ) | ||||
| Calorie (International Steam Table) | Cal-IT (kg-cal-IT) | CalIT | 1.0 CalIT (4.2 kJ) | ||||
| megacalorie (International Steam Table) | Mcal-IT (g-cal-IT) | McalIT | 1.0 McalIT (4.2 MJ) | ||||
| kilocalorie (International Steam Table) | kcal-IT (g-cal-IT) | kcalIT | 1.0 kcalIT (4.2 kJ) | ||||
| calorie (International Steam Table) | cal-IT (g-cal-IT) | calIT | 1.0 calIT (4.2 J) | ||||
| millicalorie (International Steam Table) | mcal-IT (g-cal-IT) | mcalIT | 1.0 mcalIT (4.2 mJ) | ||||
| pound/ounce-foot/ inch-hour-minute-second |
foot-poundal | ftpdl | ft⋅pdl | 1.0 ft⋅pdl (0.042 J) | |||
| foot-pound force | ftlbf | ft⋅lbf | 1.0 ft⋅lbf (1.4 J) | ||||
| ftlb-f | ft⋅lbf | ||||||
| foot-pound | ftlb | ft⋅lb | |||||
| inch-pound force | inlbf | in⋅lbf | 1.0 in⋅lbf (110 mJ) | ||||
| inlb-f | in⋅lbf | ||||||
| inch-pound | inlb | in⋅lb | |||||
| inch-ounce force | inozf | in⋅ozf | 1.0 in⋅ozf (7.1 mJ) | ||||
| inoz-f | in⋅ozf | ||||||
| horsepower-hour | hph | hp⋅h | 1.0 hp⋅h (0.75 kWh) | ||||
| British thermal unit multiples | British thermal unit | Btu | Btu | 1.0 Btu (1.1 kJ) | |||
| BTU | BTU | ||||||
| million British thermal units | MMBtu | MMBtu | 1.0 MMBtu (1.1 GJ) | ||||
| e6BTU | BTU | ||||||
| British thermal unit (IT) | Btu-IT | BtuIT | 1.0 BtuIT (1.1 kJ) | ||||
| BTU-IT | BTUIT | ||||||
| British thermal unit (thermochemical) | Btu-th | Btuth | 1.0 Btuth (1.1 kJ) | ||||
| BTU-th | BTUth | ||||||
| British thermal unit (ISO) | Btu-ISO | BTUISO | 1.0 BTUISO (1.1 kJ) | ||||
| BTU-ISO | BTUISO | ||||||
| British thermal unit (39°F) | Btu-39F | Btu39°F | 1.0 Btu39°F (1.1 kJ) | ||||
| BTU-39F | BTU39°F | ||||||
| British thermal unit (59°F) | Btu-59F | Btu59°F | 1.0 Btu59°F (1.1 kJ) | ||||
| BTU-59F | BTU59°F | ||||||
| British thermal unit (60°F) | Btu-60F | Btu60°F | 1.0 Btu60°F (1.1 kJ) | ||||
| BTU-60F | BTU60°F | ||||||
| British thermal unit (63°F) | Btu-63F | Btu63°F | 1.0 Btu63°F (1.1 kJ) | ||||
| BTU-63F | BTU63°F | ||||||
| British thermal unit (mean) | Btu-mean | Btumean | 1.0 Btumean (1.1 kJ) | ||||
| BTU-mean | BTUmean | ||||||
| quadrillion British thermal units | quad | quad | assumes the: 59 °F Btu and the——"long scale" quadrillion (10) | 1.0 quad (1.1 EJ) | |||
| therm (EC) | thm-EC | thm (EC) | 1.0 thm (EC) (110 MJ) | ||||
| therm (UK) | thm-UK | thm (UK) | 1.0 thm (UK) (110 MJ) | ||||
| therm (US) | thm-US | thm (US) | 1.0 thm (US) (110 MJ) | ||||
| TNT-based units | teratonne of TNT | TtTNT | (none) | 1.0 teratonne of TNT (4.2 ZJ) | |||
| teraton of TNT | TtonTNT | (none) | |||||
| gigatonne of TNT | GtTNT | (none) | 1.0 gigatonne of TNT (4.2 EJ) | ||||
| gigaton of TNT | GtonTNT | (none) | |||||
| megatonne of TNT | MtTNT | (none) | 1.0 megatonne of TNT (4.2 PJ) | ||||
| megaton of TNT | MtonTNT | Mt | |||||
| kilotonne of TNT | ktTNT | (none) | 1.0 kilotonne of TNT (4.2 TJ) | ||||
| kiloton of TNT | ktonTNT | kt | |||||
| tonne of TNT | tTNT | (none) | 1.0 tonne of TNT (4.2 GJ) | ||||
| ton of TNT | tonTNT | (none) | |||||
| kilogram of TNT | kgTNT | (none) | 1.0 kilogram of TNT (4.2 MJ) | ||||
| millitonne of TNT | mtTNT | (none) | |||||
| milliton of TNT | mtonTNT | (none) | |||||
| gram of TNT | gTNT | (none) | 1.0 gram of TNT (4.2 kJ) | ||||
| oil-based units | gigatonne of oil equivalent | Gtoe | Gtoe | 1.0 Gtoe (42 EJ) | |||
| megatonne of oil equivalent | Mtoe | Mtoe | 1.0 Mtoe (42 PJ) | ||||
| kilotonne of oil equivalent | ktoe | ktoe | 1.0 ktoe (42 TJ) | ||||
| tonne of oil equivalent | toe | toe | 1.0 toe (42 GJ) | ||||
| kilo barrel of oil equivalent | kBOE (kbboe) | kBOE | 1.0 kBOE (6.1 TJ) | ||||
| barrel of oil equivalent | BOE | BOE | 1.0 BOE (6.1 GJ) | ||||
| atmospheric-pressure-based units | m3atm | m3atm | (none) | 1.0 m3atm | |||
| scc | scc | (none) | 1.0 scc | ||||
| cm3atm | cm3atm | (none) | |||||
| ccatm | ccatm | ||||||
| Glatm | Glatm | (none) | 1.0 Glatm | ||||
| GLatm | GLatm | ||||||
| Mlatm | Mlatm | (none) | 1.0 Mlatm | ||||
| MLatm | MLatm | ||||||
| klatm | klatm | (none) | 1.0 klatm | ||||
| kLatm | kLatm | ||||||
| sl | sl | (none) | 1.0 sl | ||||
| latm | latm | (none) | |||||
| Latm | Latm | ||||||
| mlatm | mlatm | (none) | 1.0 mlatm | ||||
| mLatm | mLatm | ||||||
| scy | scy | (none) | 1.0 scy | ||||
| cuydatm | cuydatm | (none) | |||||
| standard cubic foot | scf (scfoot) | scf | long code "scfoot and cufootatm" outputs standard cubic foot and cubic foot of atmosphere respectively (and never feet) | 1.0 scf (2.9 kJ) | |||
| cuftatm | cuftatm (cufootatm) | (none) | |||||
| impgalatm | impgalatm | (none) | 1.0 impgalatm | ||||
| USgalatm | USgalatm (usgalatm) | (none) | 1.0 USgalatm | ||||
| U.S.galatm (usgalatm) | U.S.galatm | ||||||
| Other | foe | foe | (none) | 10 ergs | 1.0 foe (1.0×10 YJ) | ||
| Board of Trade Unit | B.O.T.U. | B.O.T.U. | an obsolete UK synonym for kilowatt-hour | 1.0 B.O.T.U. (3.6 MJ) | |||
| Celsius heat unit (International Table) | CHU-IT | CHUIT | 1 BTUIT × 1 °C/°F | 1.0 CHUIT (1.9 kJ) | |||
| thermie | th | th | 1 McalIT | 1.0 th (4.2 MJ) | |||
| Hartree | Eh (Hartree) | Eh | 1.0 Eh (27 eV) | ||||
| rydberg | Ry | Ry | 1.0 Ry (14 eV) | ||||
| cubic foot of natural gas | cuftnaturalgas (cufootnaturalgas) |
(none) | long code "cufootnaturalgas" outputs cubic foot of natural gas (and never feet) | 1.0 cubic foot of natural gas (1.1 MJ) | |||